[Openstack-stable-maint] Stable check of openstack/swift for ref refs/heads/stable/train failed

Build failed. - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/07e4310253374135b6f9074a25f9e6b9 : SUCCESS in 9m 08s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/a6a52632f3804179836e25233974c773 : FAILURE in 15m 07s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/b72f05859409412cbdae27f632d04744 : FAILURE in 15m 43s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/8c9b29a42e1a4e2d8647bd541c6bcf0e : FAILURE in 17m 51s